Act I: Eternal Sunshine is the debut mixtape by American rapper Jay Electronica, self-published onto MySpace on July 2, 2007. The mixtape plays as one 15-minute track, sampling five different tracks of American record producer Jon Brion's 2004 film score, Eternal Sunshine of the Spotless Mind. The mixtape covers a range of themes and subjects, including hip hop, Islam, and unidentified flying objects. It is notable for its lack of drums.

Elpadaro F. Electronica Allah, known professionally as Jay Electronica, is an American rapper and record producer. Born and raised in New Orleans, he first saw recognition with release of his mixtape, Act I: Eternal Sunshine (2007). Its success, along with his standalone single "Exhibit C", led New York rapper Jay-Z to sign Electronica to his record label, Roc Nation by 2010 following a multi-label bidding war. His debut studio album, A Written Testimony (2020) was met with critical acclaim and entered the Billboard 200 at number 12; it was followed by his second album, Act II: The Patents of Nobility (2020) in October of that same year. His guest performance on Kanye West's 2021 song "Jesus Lord" marked his first entry on the Billboard Hot 100.